if negativeUsage := quota.IsNegative(deltaUsage); len(negativeUsage) > 0 {
		return nil, admission.NewForbidden(a, fmt.Errorf("quota usage is negative for resource(s): %s", prettyPrintResourceNames(negativeUsage)))
	}

	if admission.Update == a.GetOperation() {
		prevItem := a.GetOldObject()
		if prevItem == nil {
			return nil, admission.NewForbidden(a, fmt.Errorf("unable to get previous usage since prior version of object was not found"))

	"github.com/stretchr/testify/require"

	admissionv1 "k8s.io/api/admission/v1"
	v1 "k8s.io/api/admissionregistration/v1"
	corev1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/apiserver/pkg/admission"
	"k8s.io/apiserver/pkg/admission/plugin/cel"
	"k8s.io/apiserver/pkg/admission/plugin/webhook/matchconditions"

  // Allowed values are "Never" and "IfNeeded".
  //
  // Never: the webhook will not be called more than once in a single admission evaluation.
  //
  // IfNeeded: the webhook will be called at least one additional time as part of the admission evaluation
  // if the object being admitted is modified by other admission plugins after the initial webhook call.

limitations under the License.
*/

// This file was generated using openssl by the gencerts.sh script
// and holds raw certificates for the webhook tests.

package testcerts

// CACert is a test cert for dynamic admission controller.
var CACert = []byte(`-----BEGIN CERTIFICATE-----
MIIC9DCCAdygAwIBAgIJAIFe3lWPaalKMA0GCSqGSIb3DQEBCwUAMA4xDDAKBgNV
BAMMA19jYTAgFw0xNzEyMjIxODA0MjRaGA8yMjkxMTAwNzE4MDQyNFowDjEMMAoG

"reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation. Allowed values are \"Never\" and \"IfNeeded\".\n\nNever: the webhook will not be called more than once in a single admission evaluation.\n\nIfNeeded: the webhook will be called at least one additional time as part of the admission evaluation if the object being admitted is modified by other admission plugins after the initial webhook call. Webhooks that specify this option *must* be idempotent,...

	"math"
	"reflect"
	"time"

	"github.com/google/cel-go/interpreter"

	admissionv1 "k8s.io/api/admission/v1"
	authenticationv1 "k8s.io/api/authentication/v1"
	v1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apiserver/pkg/admission"
	"k8s.io/apiserver/pkg/cel"
	"k8s.io/apiserver/pkg/cel/environment"

"reinvocationPolicy indicates whether this webhook should be called multiple times as part of a single admission evaluation. Allowed values are \"Never\" and \"IfNeeded\".\n\nNever: the webhook will not be called more than once in a single admission evaluation.\n\nIfNeeded: the webhook will be called at least one additional time as part of the admission evaluation if the object being admitted is modified by other admission plugins after the initial webhook call. Webhooks that specify this option *must* be idempotent,...

	tracing.SpanFromContext(ctx).AddEvent("About to check admission control")
	var operation admission.Operation
	var options runtime.Object
	if hasUID, err := hasUID(currentObject); err != nil {
		return nil, err
	} else if !hasUID {
		operation = admission.Create
		currentObject = nil
		options = patchToCreateOptions(p.options)
	} else {
		operation = admission.Update
		options = patchToUpdateOptions(p.options)
	}

	versionedInformers clientgoinformers.SharedInformerFactory,
	storageFactory *serverstorage.DefaultStorageFactory,
	serviceResolver aggregatorapiserver.ServiceResolver,
	additionalInitializers []admission.PluginInitializer,
) (
	*Config,
	[]admission.PluginInitializer,
	error,
) {
	proxyTransport := CreateProxyTransport()

	opts.Metrics.Apply()
	serviceaccount.RegisterMetrics()

	config := &Config{

)

// FailurePolicyType specifies a failure policy that defines how unrecognized errors from the admission endpoint are handled.
// +enum
type FailurePolicyType string

const (
	// Ignore means that an error calling the webhook is ignored.
	Ignore FailurePolicyType = "Ignore"
	// Fail means that an error calling the webhook causes the admission to fail.
	Fail FailurePolicyType = "Fail"
)